Shaft-straightener.



ARMINE ROTH, OF WASHINGTON, DISTRIT F COLUMBIA.

SHAFT-STRAIGHTENER.

Specification of Letters Patent.

Patented Nov. 1S, 1919.

Application filed August 4, 1919. Serial No. 315,064.

To all whom it may concern:

Be it known that I, Auxiliar. Ro'ru, a citizen of the United States, residing; at lVashington, in the District of Columbia, haye invented new and useful Improvements 1n Shaft-Straighteners, ot' which the 'follow ing' is a specification.

This invention relates to machinists or mechanics implements for straightening shafts and shafting and, more specilically stated, consists in an Aimplement otA the kind mentioned which is especially adapted for use on shafting and the like which cannot be conveniently taken down and put in a straightening machine. My implementis portable, simple and cheap to manufacture and can readily be disassembled tor transportation or storage and lassembled again at the place of use.

It is illustrated in the accompanylng` drawing, in which,

Figure l is an elevation of the device shown as applied to the straightening ot' a line shaft szfzzt, and

Fig. 2 is a similar view taken at right angles to Fig. l and showing,` the deviceas straightening;- a shaft in a lathe.

As shown in these views, the device c011- sists of a pair .of side plates 1, held together in parallel spaced relation by -at head 2 and bolts, the edges of the plates and of the head being notched at 4 and 5, respectively, to fit each other. Near their free ends the plates are slotted at 6 to receive the key 7, the function of which will be described later on.

Head 2 has an internally threaded bore in which engages the screw 8, the head 9 ot" which is provided with openings 10 for the handle 11. The end 12 of the screw has a swivel connection with the work-engaging block 15, by reason of the screw l-'l engagingl in the groove 13, turned in the screw S. The end of the latter is convex and the bottom of the bore in the block 15 is concave to perniit the block a slight play to seat itself on the work 27. The block 15 has a loose sliding fit between the plates 1 for the saine reason.

16, 16, are a pair of similar work-engaging,`

blocks, slidably mounted on the ianged head 2l of a block-carrier 20, which is removably held between the plates l, l, by means o' the key 7, before mentioned, the bottom edge or' the carrier being` centrally slotted to lit over the upper edge ot' said key. The blocks l5 andlG have V-shaped grooves 23 in their adjacent faces to engage the work.

In Fig. l, the. work, held in the V-grooves 23 of the blocks 15 and 16, is a line shaft- 2T supported in bearings from a ceilingr 2G,

for example, while in Fig. 2, it is a shaft 27 supported on the centers 28, 28, ot a lathe.

' One of the advantages of my device is its ready adaptability for use in ordinarily inaccessible places, and another is its portability and the convenience with which it can be disassenibled and reassembled. Bv withdrawing the key 7, the carrier and block 1 can be removed and, if desired, the screw S can lbe released from the block 15, by retractingthe screw 14, and removed from the head block 2. l

Having thus described my invention, what I claim is- A shaft straightener, comprising a U- shaped frame provided with slots in its legs and a threaded hole in its head, a key fitting .in said slots and notched to engage the ends thereof, a block-carrier adapted to bepassed between said legs and heine' notched to enrage the upper edge of sait` key, the upper edge of said block-carrier being, thickened or flanged to form a run-way, a pair of workengaging blocks slidably mounted on said runway and being of less thickness than the space between said legs, an opposing workengragmg block slidably mounted between said legs, and a screw enga ed in said threaded hole and operative y connected withl said opposing block.

In testimony whereof I have hereunto set my hand.

- ARMINE ROTH. 

